General

  • Target

    4f140797fa904582e8422edd3bc1c661b72a1a1ee23a329173017e20901e25ca

  • Size

    314KB

  • Sample

    211127-l4s52aaabl

  • MD5

    e7f606299a819430be235ed185050de1

  • SHA1

    73a88c1712d1c91731f7557c4a023b1599c5ac6c

  • SHA256

    4f140797fa904582e8422edd3bc1c661b72a1a1ee23a329173017e20901e25ca

  • SHA512

    cc78cd7711c2eaa7ed3ba52f77fdb02096bca1c35dbfff3576aa72d7273dfb7fa388b51c605188c7c66fa2cdc7d4d48b6d1652bc390de5e91ec2a97455e95c12

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Targets

    • Target

      4f140797fa904582e8422edd3bc1c661b72a1a1ee23a329173017e20901e25ca

    • Size

      314KB

    • MD5

      e7f606299a819430be235ed185050de1

    • SHA1

      73a88c1712d1c91731f7557c4a023b1599c5ac6c

    • SHA256

      4f140797fa904582e8422edd3bc1c661b72a1a1ee23a329173017e20901e25ca

    • SHA512

      cc78cd7711c2eaa7ed3ba52f77fdb02096bca1c35dbfff3576aa72d7273dfb7fa388b51c605188c7c66fa2cdc7d4d48b6d1652bc390de5e91ec2a97455e95c12

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

      suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Tasks